ECP 2023 Final Programme

E-Posters 165 ECP 2023 Dublin E-PS-22 E-PS-21 053 Comparative analysis of a new IHC assay for PD-L1 expression in non-small cell lung carcinomas Diana Wang, USA S. Nielsen, M. Stensballe, A. Saxena, V. Calero, J. LaMar, R. DeCamillis 054 Assessment of HER2 immunohistochemis- try scoring by pathologists with or without specific HER2-low training Agata Wróbel, Poland M. Vandenberghe, M. Scott, F. Jones, T. Matsuo, A. Boothman, J. Whiteley, C. Barker E-PS-22 E-Posters Soft Tissue and Bone Pathology 001 A rare case: a 15 year-old-female patient presenting with multiple vascular tumours and enchondromas: maffucci syndrome Seyma Aker, Turkey F. Dogukan, S. Toy, A. Ganiyusufoglu 002 An analysis of giant cell-rich lesions of bone with emphasis on the role of p63 expression as a diagnostic biomarker for giant cell tumour of bone Sara Al Shehhi, Oman H. Al Kindi, M. George 003 Dedifferentiated liposarcoma in a spindle cell rhabdomyosarcoma: a rare and complex case Florina Almarii, Romania A. Procop, T. Radaschin, C. Vasilescu, V. Herlea 004 Histopathological and clinical features of pelvic chondrosarcomas Betül Nur Altuntas Keskin, Turkey S. Arsoy, A. Önenerk Men, M. Ozsahin, H. Dincbas, C. Comunoglu, N. Çomunoğlu 005 A case report of a 25 year old woman with a known history of biphasic synovial sarcoma and a late reccurence in the retroperitoneal space Evangelia Baliou, Greece M. Christidis, E. Bairamidis, D. Nikolakopoulos, M. Pandazi 006 Clinicopathologic spectrum of myxoid tumours: a diagnostic challenge and helpful ancillary studies Yekaterina Belogrivtseva, USA A. Tushir, K. Khouri, D. Proca 007 Hemosiderotic fibrolipomatous tumour, a diagnostic challenge Mihaela Madalina Buda, Spain È. Iglesias Martínez, A. Sifre Ruiz, N. Santiago Quispe, C. Esquina Rodriguez, B. Caton Santaren 008 Desmoplastic fibroma of bone: a series of five cases Yasemin Cakir, Turkey B. Bambul Sığırcı, E. Hacıhasanoğlu, Y. Kök, G. Başdemir, K. Behzatoğlu 009 Angiomatoid fibrous histiocytoma – case series with detailed morphological and immunohistochemical features Gokce Hande Cavus, Turkey A. Önenerk Men, S. Çetinkaya, R. Tanrıtanır, H. Türköz, N. Çomunoğlu 010 Molecular identification of an intra-thoracic BCOR-rearranged sarcoma with novel BCOR-CLGN gene fusion Yi Che Chang Chien, Hungary K. Madarász, S. Csoma, J. Mótyán, H. Huang, A. Mokánszki, G. Mehes 011 Rare tumour with uncommon clinical behaviour: relapsed intramuscular angioma of the elbow Ana-Maria Ciongariu, Romania A. Dumitru, M. Sajin, A. Marin, M. Costache 012 Epithelioid neoplasm with EWSR1/ FUS-CREB fusions and predilection for mesothelial-lined cavities: case report Adriana Paola Diazgranados Daza, Spain T. Silva, G. Tapia Melendo, J. Chabla Jaramillo, J. Garcia Gomez, S. Ramón y Cajal Agüeras, C. Romagosa Perez-Portabella